Expanding joints & sealants
Our hydro-swelling rubber strips are available in a wide range of shapes and sections for sealing smooth construction joints and joints between precast concrete segments. It can be applied to most common construction
materials and has a delayed initial expansion to allow installation in rain or inclement weather conditions.
Our solutions:
- Swelling gaskets: Swellseal®, Supercast SW
- Joint sealants: weber jointseal, weberseal, Nitoseal, Thioflex
Our services:
- Expertise to develop sizes and sections according to project design and requirements.
Synthetic fibers
Our synthetic fiber solutions enhance tunnel segment safety, durability, and sustainability by replacing steel mesh to reduce time, costs, weight, and CO2 footprint.
Corrosion‑free fibers improve long‑term performance, while dedicated micro‑fibers limit explosive spalling under extreme heat, increasing fire resistance and structural safety.
Our solutions:
- Fibers: Adfil®Strux, Adfil®Ignis, Adfil®Durus EasyFinish
Our services:
- Structural dimensioning and dosage recommendations
- In-field support and training.
Accelerators
Chryso®Daraset accelerators enhance precast concrete performance for tunnel segments. They speed up setting and early strength development, even at low temperatures, boosting robustness and productivity through faster mold rotations.
Fully compatible with existing production processes, they also support the use of low‑carbon binders.
Our solutions:
- Accelerators: Chryso®Daraset
Our services:
- Concrete mix design and on-site support
- Durability testing
- Dispensing equipment
- Inventory management
Solutions for Tunnel Boring Segments
Optimising Tunnel Boring Segment production: Chryso®Tera stands out as it improves tunnel segments production thanks to its performant admixture technologies and dedicated services to adapt the admixture formulation to the especific needs and requirements of tunnel segments
Our solutions:
- Superplasticizers for Tunnel Boring Segments: Chryso®Tera Lab
Our services:
- Chryso®TeraLab service stands out in its customised support, from the diagnostics phase to project completion
- Maturix® Concrete Monitoring digital service
- Mix design optimization service
Precast concrete repair
Casting defects and handling damage require fast, durable repairs that can withstand installation stresses without delaying tunnelling works.
Repairs must quickly reach high strength and match the performance of the parent concrete.
Renderoc repair mortars offer excellent adhesion and rapid strength development, making them ideal for efficient, long‑lasting repairs both in the yard and on site.
Our solutions:
- Concrete repair: Renderoc
- Grouts: Conbextra
- Anchoring resins: Lokfix
Our services:
- Selection advice for repair materials and techniques appropriate to the structure
- Products and advice for the management of corrosion
- Training and supervision of specialist applications
Release & Curing agents
Our solutions combine high‑performance release agents and curing agents to deliver flawless surfaces and durable tunnel segments. They extend formwork service life through corrosion‑inhibition technology, promote optimal concrete hydration, and reduce surface porosity over time. Easy to apply and user friendly designed, these solutions support efficient, sustainable precast production
Our solutions:
- Release agents: Chryso®Dem
- Curing agents: Chryso®Cure
Our services:
- Spraying equipment
- Application Audit and Training (Adequadem program)
